cfc

The restoration of the ozone layer in Antarctica cannot be taken for granted and requires constant vigilance.

According to a group of US scientists, the ozone layer gap is gradually shrinking thanks to efforts to reduce CFC emissions into the atmosphere.

Scientists have discovered in the stratosphere layers of dichloromethane, not currently on the Montreal Protocol's prohibition list.

Scientists say that the ozone layer is gradually shrinking and may disappear by 2070.

According to scientists, ozone holes have recently appeared in the Arctic region. At an altitude of about 20km from the ground, ozone concentrations decreased by 80%.

In the most recent report, international efforts to prevent the destruction of the ozone layer have achieved initial success.

Starting from January 1, 2010, all CFCs (clorofluorocarbon) degrade ozone layer will be banned from importing into Vietnam.